John h



(No Model.) 7

J. H. VINTON.

' BATGHET DRILL.

No. 295,694, Patented Mar. 25, 18184.

a WW? INVEN UR hfw WITNEEEEEJ' fitting, and cannot easily be got out of order, because the feeding-screw does not hold arigid I my improvement.

I ornut, and at the same time accurately fit the shall benobinding action of the feeding-screw UNITED STATES PATENT OFFICE.

JOHN H. VINION, 0E BQSTON, MASsAcHUSErrs, ASSIGNOR TO THE ASH- CROFT MANUFACTURING COMPANY, OF SAME PLACE.

.RATCHET-DRILL.

SPZEICIF'ICA'JJION forming part of Letters Patent No. 29 5, 69.4,-dated March 25, 1884.

I Application filed October l3, 1883. (No model.)

To all whom it may concern Be it known that I, JOHN H. VIN'roN, of Boston, in the county of Suffolk and State of Massachusetts, a citizen of the United States, have invented certain new and useful Improvements in Ratchet-Drills, of which the following is a full, clear, and exact description, reference being had to the, accompanying drawings, forming a part ofthis specification, in explaining its nature, in which l Figure lis aside elevation of a drill having Fig. 2'is avertica-l section thereof, and Fig. 3 is a cross-section on the line a; m of Fig: 1.

The invention relates, especially, tothe por tion of a ratchet-drill known as the feeding device; and it consists in attaching the feeding-screw to the sleeve or cap covering thenut in such a manner that the screw may be revolved independently of the sleeve or cap, and the sleeve or capgiven a vertical movement upon the stemfpart or nut in which the screw works.

In the ordinary ratchet-drill the sleeve or cap and the feeding-screw inclosed by it are rigidly united at their ends, and it requires very nice fitting of the parts to adjust the feeding=screw to the screw of the hole in the post sleeve or cap to the post or nut, so that there or cap upon the post or nut as they are revolved. This nice fitting of course can be done, but only by skilled workmen, andat a considerable expense; and, moreover, as these drills are-subjected: to rough usage, there is great liability of the post or feeding-screw or capbecoming a little out .of line, or bent, in

relation to each'other, and if this occurs'the cap binds upon the post and works hard thereon. My invention does not require this exact relation to the outer sleeve or cap, but being fitted loosely thereto, and not being operated thereby, but by a nut upon itsend, the capior leeve findsits bearing upon the post, while the screw is free to centerfitself inthe screw-hole in the post ornut Referring to the ings, a represents the The hole at, through which the screw extends,

1 screw into the threaded holea, all su post or nut; b, the screw-hole therein. c represents a longitudinal groove or recess in the post or nut. d is the cap or sleeve which fits the postor nut, and e 'isa pin which projects from the inner surface of the sleeve or cap into the recess or groove 0 in the post, and prevents the sleeve or cap from turning thereon While it is being moved. f is the feeding-screw. f is a shoulder thereon, and f the thumb disk or knob by which the feeding-screw is revolved. This thumb-disk is near the end of thescrew, and is of about the same diameter as the sleeve or cap. It is pinned to the end of the screw, and in connection with the shoulder f loosely fastens the sleeve or cap to the screw.

is made a little larger than the screw, to permit a slight play of the screw therein. This play of the feeding-screw in the cap or sleeve permits 'it to follow the threadin the post or nut hole \VlllhOllh binding.

The other. parts of the drill, to which the improvement in this case is applied, are like, in construction, the common ratchet-drill of this class, of which A is the ratchet-wheel; B, the handle; 0, the spring-pawl; D, the socket for holding the drill. l

It will be observed that in use this feeding screw is operated by the thumb-disk f and the cap is not revolved on the nut, but simply slides longitudinally thereon, and that as the cap has this movement, and as the feeding screw is loosely attached to it, the cap cannot be so Wedgedby dirt as to run hard.

Having thus fully described my invention, I claim and desire to secure by Letters Patent of the United States A A 1. In a ratchet-drill, thecombination of the l post or nut a, having the groove or recess 0 and threadedholeb, with the sleeve or cap d, having the pin a; and theqfeeding-screw f, 1 loosely secured to the sleeve, and adaptedyto y bearevolved therein, all substantially as and for the purposes described. I

2. The combination of the postornut a, have: ing the screwthreaded holeb, with the sleeve or cap d and a feeding-screw, f,llo'osely at f tached to the sleeveor cap, andadaptedto as and for the purposes described.

bstantially 3. In a ratchet-drill, the combination of the l scribed, comprising the nuta, the cap or sleeve 10 post or nut a, having the screw-threaded hole (I, feeding-sorewf, loosely attached to thesleeve b, the sleeve or cap d, and feeding-screw f, or cap (I, and the thumb-disk f all substanadapted to sorewinto the nut a, and the thumbtially as and for the purposes described. 5 disk f all substantially as and for the pur- T T poses-described. JOHN '4. In a ratchet-drill the combination of the \Vitnesses: drill-stock D, ratchet -wheel A, handle 13, F. F. RAYMOND, 2d, spring-pawl G, and the feedingdevice de- FRED. HARRIS. 

